The challenge consists of two almost identical images of a couple watching the sunset, with three differences hidden between them. Participants are given a time limit of 17 seconds to identify ...

The colours of sunrise and sunset result from a phenomenon known as scattering: molecules and small particles in the atmosphere change the direction of light rays, causing them to scatter, which ...

The warm tones and low angle of the light at those hours tend to be the most pleasing for photographs which makes them a great subject for this month’s Readers Photo Challenge. While the best light ...